4) ratio values imply that the samples contain mostly Type III kerogen
with minor Type IV and Type II/III kerogens
and yield hydrogen index values ranging from 282 to 510 mg HC/g TOC with low oxygen index values, consistent with Type II and mixed Type II-III kerogens
For instance, we've studied samples of different types of rocks including kerogens
, which are found in oil shales," he says.
In most samples organic matter (OM) consists predominantly of type I and II kerogens
, showing high oil generative potential, whereas three samples, which contain type II kerogen
with a certain input of type III kerogen
, demonstrated potential to produce both, oil and gas.
Nitrogen chemistry of kerogens
and bitumens from X-ray absorption near-edge structure spectroscopy.
The organic matter (OM) of HD oil shale belongs to type I kerogen
, that of YJ oil shale is type II kerogen
, whereas the OM of MM oil shale appears to be between type I and type II kerogens
However, it was more similar to type I kerogen
, which suggests that kerogens
of these two types have rather good oil-generating potential .
Shales, which mostly contain Type I and III kerogens
and are characterized by high TOC with an average content of 1.
6) reveals a predominance of Type II and III kerogens
The dominant oxygen-containing compounds in the pyrolysates of Mol and Bure kerogens
were furanic derivatives, which were quite few in the Dachengzi oil shale pyrolysates.
All these minerals and kerogens
thermally decompose into different chemical species at different temperatures.
Structural and isotopic analysis of kerogens
in sediments rich in free sulfurised Botryococcus braunii biomarkers.